nymaim | 9c6e7d1cc84f620c9f9d01c11bb7bdc1e7b8412b7698aed8b836cc386e089031

Analysis

max time kernel
74s
max time network
76s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
10/10/2022, 14:51

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General

Target

file.exe
Size

405KB
MD5

eabf529b6670896aa7be9ebf12c8c4be
SHA1

c11ba0946fb54213f128152214b201e438e77003
SHA256

9c6e7d1cc84f620c9f9d01c11bb7bdc1e7b8412b7698aed8b836cc386e089031
SHA512

6cfd6dbd1ce910579827698ffb4383a68ca50503bbfa83e875d762e29a8c64a077e52b4eaedd8d6ee23c74cc9541cfc6674504106e2bec307b2ab08b265b0f39
SSDEEP

6144:+oe0SgPX/qIy7F3Ulc1pRs30Va2l2lU7dzQW1LrrwVfquS:+o/X/qWsRKZK7+4rd

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 1 IoCs

pid	Process
612	ArToWLGfDyUGsf.exe

Deletes itself 1 IoCs

pid	Process
1564	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1100	file.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1072	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1100	file.exe
1100	file.exe
1100	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1072	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 612	1100	file.exe	30
PID 1100 wrote to memory of 612	1100	file.exe	30
PID 1100 wrote to memory of 612	1100	file.exe	30
PID 1100 wrote to memory of 612	1100	file.exe	30
PID 1100 wrote to memory of 1564	1100	file.exe	31
PID 1100 wrote to memory of 1564	1100	file.exe	31
PID 1100 wrote to memory of 1564	1100	file.exe	31
PID 1100 wrote to memory of 1564	1100	file.exe	31
PID 1564 wrote to memory of 1072	1564	cmd.exe	33
PID 1564 wrote to memory of 1072	1564	cmd.exe	33
PID 1564 wrote to memory of 1072	1564	cmd.exe	33
PID 1564 wrote to memory of 1072	1564	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ArToWLGfDyUGsf.exe
  2⤵
  - Executes dropped EXE
  PID:612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1072

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ArToWLGfDyUGsf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\ArToWLGfDyUGsf.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1100-57-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1100-59-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1100-58-0x000000000058A000-0x00000000005BA000-memory.dmp

Filesize
192KB

Download
memory/1100-54-0x00000000763F1000-0x00000000763F3000-memory.dmp

Filesize
8KB

Download
memory/1100-55-0x000000000058A000-0x00000000005BA000-memory.dmp

Filesize
192KB

Download
memory/1100-63-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1100-68-0x000000000058A000-0x00000000005BA000-memory.dmp

Filesize
192KB

Download
memory/1100-69-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1100-56-0x0000000000220000-0x0000000000273000-memory.dmp

Filesize
332KB

Download